Generally, babies born between 28 and 37 weeks of gestation are considered premature. Normally, premature babies have underdeveloped organ systems, which makes them prone to serious abnormalities in various organs after birth. This can lead to conditions such as respiratory distress syndrome or cerebral palsy. Signs of premature labor typically include sudden regular abdominal pain without any other abnormalities, accompanied by clear uterine contractions and a feeling of abdominal heaviness, with a persistent, notable dilation of the cervix.